Cassie Quick

Cassie Quick is a female speed demon and ally of Marcus Allen and the rest of the Legends. The daughter of scientist Harrison Quick and Tessa Quick, Cassie is gifted in the field of science but pursues a career in music. In a lab accident, Cassie was struck by lightning and affected by Kane's rupture wave similar to Marcus. However, it took until 2019 for her powers to activate and approached the Legends. After receiving training by Professor Grayson and Marcus, Cassie adopted the name Quicksilver and helped Marcus defeat Godspeed before leaving West City with her parents and establishing herself in another city. She later helped during Sebastian's raid on the Brotherhood's hideout.